Drawell MDF-40V50 User Manual

Medical freezer

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Please read operating manual before installation and operation.

Drawell International Technology Limited

Shanghai Drawell Scientific Instrument Co.,Ltd

Add : Suite 1506,Lane581 XiuChuan Rd.,PuDong New Area,Shanghai,China

Tel: 0086 21 50966080

Fax: 0086 21 50966080

Web : www.drawell.com.cn

Email : sales01@drawell.com.cn

User Manual

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Page 1 User Manual Please read operating manual before installation and operation. Drawell International Technology Limited Shanghai Drawell Scientific Instrument Co.,Ltd Add : Suite 1506,Lane581 XiuChuan Rd.,PuDong New Area,Shanghai,China Tel: 0086 21 50966080 Fax: 0086 21 50966080 Web : www.drawell.com.cn Email : sales01@drawell.com.cn...
Page 2 OPERATION MANUAL MEDICAL FREEZER MDF-40V50 VERSION: 2017-4 (MDF-40V50)
Page 3 Statement: Thank you for buying our medical refrigerator. For your safe and convenient use and reasonable maintenance of the product, please read the operation instruction carefully and keep it properly for reference. For damages of any instrument due to the fact that the user does not use the product according to the instrument operating environment declared in the handbook or injuries due to the fact that individual does not operate the product according to safety instructions, we have no obligations and responsibilities to be in charge of them.
Page 4: Table Of Contents
CONTENTS I. Main performance and characteristics of the product..........3 II. Precautions........................3 III. Range of application.......................5 IV. Preparation for use......................5 V. Structure diagram......................5 VI. Start and test machine....................6 VII. Model and main technical parameters..............6 VIII. Functions and basic operation of controller............7 8.1 Control panel structure...................
Page 5: Main Performance And Characteristics Of The Product
I. Main performance and characteristics of the product Thermal insulating door and secondary seal door are adopted for use convenience. The loss of  refrigeration capacity is reduced and the energy consumption is saved. Air-cooled condenser is adopted which is provided with good heat dissipation and fast refrigerating speed. ...
Page 6 wire cannot be connected with gas pipe, stem heating pipe and water pipe and the zero line of single-phase source should not be taken over as well. ：If the power connect wire has to be lengthened, the sectional area of the conductor is larger than or ...
Page 7: Range Of Application
Please place the ultra low temperature freezer at proper location 【 please refer to relevant terms in  Precautions】. It would be best to clean the freezer before use【please refer to relevant terms in Maintenance】.  V.Structure diagram Temperature Controller Power Switch Cabinet Thermal Insulation Outer Door Lock Door Inside Door Trundle (MDF-40V50 diagram)
Page 8: Start And Test Machine
(it is best to keep it running in empty state for 7hours above) and the inside is cooled completely, the cold store articles can be put in. VII. Model and main technical parameters Model MDF-40V50 Type Vertical type Total effective volume (L) -10℃～-40℃...
Page 9: Functions And Basic Operation Of Controller
VIII. Functions and basic operation of controller 8.1 Control panel structure computer control system is adopted by the ultra low temperature freezer To display target set point, in programming mode it selects a parameter or confirm an operation To start a manual defrost (Only XR02CX) In programming mode it browses the parameter codes or increases the displayed value In programming mode it browses the parameter...
Page 10: How To Start A Manual Defrost (Only Xr02Cx)
4.To memorise the new set point value push the SET key again or wait 10s. 8.1.4 How to start a manual defrost (only xr02cx) Push the DEF key for more than 2 seconds and a manual defrost will start 8.1.5 How to change parameter value To change the parameter’s value operate as follows: 1.Enter the Programming mode by pressing the SET+ keys for 3s (“°C”...
Page 11 Defrost(only xr02cx) Interval between defrost cycles: (0÷99 ore) Determines the time interval between the beginning of two defrost cycles. Md Maximum length for defrost: (0÷99 min. with 0 no defrost) when P2=n, (not evaporator probe: timed defrost) it sets the defrost duration, when P2 = y (defrost end based on temperature) it sets the maximum length for defrost.
Page 12: Digital Inputs
8.3 Digital inputs The free voltage digital input is programmable in different configurations by the “iF” parameter. Door switch It signals the door status and the corresponding relay output status through the “dC” parameter: no  =normal (any change); Fn = Fan OFF; CP = Compressor OFF; FC = Compressor and fan OFF. Since the door is opened, after the delay time set through parameter “di”...
Page 13: Alarm Recovery
8.4.1 alarm recovery Probe alarms P1” and “P2” start some seconds after the fault in the related probe; they automatically  stop some seconds after the probe restarts normal operation. Check connections before replacing the  probe. Temperature alarms “HA” and “LA” automatically stop as soon as the temperature returns to normal values.
Page 14: Schematic Circuit Diagram
Schematic circuit diagram X. Storage essentials Before storing articles, please keep the freezer running in empty state. When the freezer is running  stably (it is best to keep it running in empty state for 5 hours above) and the inside is cooled completely, the cold store articles can be put in.
Page 15: Maintenance
XI. Maintenance Body cleaning: please use non-corrosive neutral cleaning agent to clean the inside and outside  surfaces of the ultra low temperature freezer and then use dry cloth to wipe it up. Notes: it is strictly prohibited to use water to directly wash the inside and outside surfaces of the freezer ...
Page 16: General Fault Analysis And Removal
Notes: if the ultra low temperature freezer still cannot work normally after being inspected and handled  according to the above methods, please contact the maintenance department of our company in time. XIV. Packing List Model User Manual Shelf Buckle MDF-40V50...
Page 17 Drawell International Technology Limited Shanghai Drawell Scientific Instrument Co.,Ltd Add : Suite 1506,Lane581 XiuChuan Rd.,PuDong New Area,Shanghai,China Tel: 0086 21 50966080 Fax: 0086 21 50966080 Web : www.drawell.com.cn Email : sales01@drawell.com.cn...